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Questions in Math tagged with "natural number"

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  Determine the probability of choosing a number from the set of 3 digits natural numbers that has at least 2 equal digits.

  Posted by fairydrink on Jun 20, 2009 at 07:03 AM

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  Having the function fn(x)=x^n+n*x-1, demonstrate that fn is convex, for any n>2; n is a natural number.

  Posted by pavelpimen on Jun 9, 2009 at 12:45 AM